I used Google Translate. Does this look accurate?

Pat,

Are you the person who is apologizing? If so, your apology is unacceptable and I would not accept it. If you are the perpetrator, you need to go through and describe all the emotional unhappiness (you) have caused. Until then, it would only be natural for people to continue to avoid (you). I also noticed (you) have also not asked people to display their anger towards (you) directly, and that (you) would be quiet, meek, and humble while they did.

In Japan, when a person engages in toxic behavior, it is automatically assumed the perpetrator has a toxic personality until they prove otherwise. And, in my opinion, this is how it should be. Have (you) told everyone (you) may have a toxic personality and that (you) are going to do something about it?

PatPaul said:

I want to sincerely apologize to you for my behavior the other day (Saturday, January 13th). I am sorry. The way I acted was inappropriate and rude. I know you are all working on a volunteer basis, and you do not deserve to be criticized, like I did to you. I take respsonsibility for my actions.

I have over the past several years caused a lot of trouble for the volunteers in the classes and in the language salons, as well as in the office of the International Center. I know you are all busy and do a lot to help foreigners like myself, but unfortunately, I fail to recognize this, and am often ungrateful.

I promise not to act like this in the future, and I hope you will accept my apology.

先日（1月13日土曜日）の私の行動について、心よりお詫び申し上げます。ごめんなさい。私の行動は不適切で失礼でした。皆さんがボランティアベースで活動していることは知っていますし、私が皆さんにしたように批判されるべきではありません。私は自分の行動に責任を負います。
Senjitsu (1 tsuki 13-nichi doyōbi) no watashi no kōdō ni tsuite, kokoroyori owabi mōshiagemasu. Gomen'nasai. Watashi no kōdō wa futekisetsude shitsureideshita. Minasan ga borantiabēsu de katsudō shite iru koto wa shitte imasushi, watashi ga minasan ni shita yō ni hihan sa rerubekide wa arimasen. Watashi wa jibun no kōdō ni sekinin o oimasu.

ここ数年、授業や語学サロンのボランティアの皆様、国際センターの事務局の皆様には大変ご迷惑をおかけしてしまいました。皆さんが忙しく、私のような外国人を助けるためにたくさんのことをしていることは承知していますが、残念ながら私はそのことを認識できず、恩知らずなことが多いです。

Koko sū-nen, jugyō ya gogaku saron no borantia no minasama, kokusai sentā no jimukyoku no minasama ni wa taihen gomeiwaku o okake shite shimaimashita. Minasan ga isogashiku, watashi no yōna gaikoku hito o tasukeru tame ni takusan no koto o shite iru koto wa shōchi shite imasuga, zan'nen'nagara watashi wa sono koto o ninshiki dekizu, onshirazuna koto ga ōidesu.
今後、このような行為はしないことを約束しますので、お詫びの気持ちを賜りますようお願い申し上げます。
kongo 、 kono you nani koui wa shi nai koto wa yakusoku shi masu node 、 owabi no kimochi wa tamawari masu you onegai moushiage masu .

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It sounds translationese-like, but understandable enough except the very last clause お詫びの気持ちを賜りますようお願い申し上げます. This actually means "I hope I will receive your apology (= you should apologize me)". It should be お詫びの気持ちをお受け頂きますようお願い申し上げます.